Search for a vector-like bottom quark partner in same sign di-lepton final states

. Events with a same-sign lepton pair and hadronic activity are selected and no excess above expected Standard Model backgrounds is observed. The results are used to set limits on the mass of the

{\rm b}^\prime

quark as a function of its branching ratio to tW, bZ and bH. The data excludes a

{\rm b}^\prime

quark with mass less than 800 GeV if the decay is to a top and W exclusively.

Note:

Preliminary results

Data
p p: scattering
quark: vector: search for
dilepton: same sign
branching ratio
background
CMS
hadron: multiple production
bottom': pair production
bottom': decay modes

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